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really_that_one t1_iyciyee wrote

We would be able to measure directly a magnetic field that has a high enough energy density to generate a gravitational field that produces the effects of dark matter

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thegagis t1_iyck7e0 wrote

We'd be easily able to observe its interaction with charged particles and the presence of such a field would not be a mystery at all.

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ferrel_hadley t1_iyckl80 wrote

Magnetic fields polarise light. We would see it with ease. They also have no effect on most elements. There are a lot of reasons this is not the case, including observing the bending of spacetime caused by the dark matter. That is down to gravity.

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redditsussyballs t1_iycn9dp wrote

Then we'd actually be able to detect it. We can't, which is what makes it so intriguing.

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CrazyKarlRove t1_iycnh42 wrote

You should read more. If it had a magnetic field it wouldn't meet the fundamental definition of what dark matter is.

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space-ModTeam t1_iycnj09 wrote

Hello u/Sad_Instruction_2157, your submission "Dark matter is a magnetic field?" has been removed from r/space because:

  • Such questions should be asked in the "All space questions" thread stickied at the top of the sub.

Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.

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